config.gcc (sparc-wrs-vxworks): New target.
gcc/ * config.gcc (sparc-wrs-vxworks): New target. * config/sparc/vxworks.h, config/sparc/t-vxworks: New files. * config/sparc/sparc-protos.h (sparc_emit_call_insn): Declare. * config/sparc/sparc.h: Include vxworks-dummy.h. (PRINT_OPERAND_ADDRESS): Extend SYMBOL_REF handling to include LABEL_REFs too. * config/sparc/sparc.c (sparc_expand_move): Don't assume that _GLOBAL_OFFSET_TABLE_ - label_ref is a link-time constant on VxWorks. (legitimize_pic_address): Handle LABEL_REFs like SYMBOL_REFs on VxWorks. (load_pic_register): Use gen_vxworks_load_got for VxWorks. (sparc_emit_call_insn): New function. (sparc_function_ok_for_sibcall): Restrict sibcalls to locally-binding functions when generating VxWorks PIC. * config/sparc/sparc.md (vxworks_load_got): New pattern. (call, call_value): Use sparc_emit_call_insn instead of emit_call_insn. libgcc/ * config.host (sparc-wrs-vxworks): New target. From-SVN: r124595
This commit is contained in:
Richard Sandiford
Richard Sandiford
parent
31b40480a4
commit
1910440ea6
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@ -1,3 +1,24 @@
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2007-05-10 Richard Sandiford <richard@codesourcery.com>
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* config.gcc (sparc-wrs-vxworks): New target.
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* config/sparc/vxworks.h, config/sparc/t-vxworks: New files.
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* config/sparc/sparc-protos.h (sparc_emit_call_insn): Declare.
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* config/sparc/sparc.h: Include vxworks-dummy.h.
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(PRINT_OPERAND_ADDRESS): Extend SYMBOL_REF handling to
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include LABEL_REFs too.
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* config/sparc/sparc.c (sparc_expand_move): Don't assume that
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_GLOBAL_OFFSET_TABLE_ - label_ref is a link-time constant on
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VxWorks.
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(legitimize_pic_address): Handle LABEL_REFs like SYMBOL_REFs
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on VxWorks.
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(load_pic_register): Use gen_vxworks_load_got for VxWorks.
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(sparc_emit_call_insn): New function.
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(sparc_function_ok_for_sibcall): Restrict sibcalls to locally-binding
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functions when generating VxWorks PIC.
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* config/sparc/sparc.md (vxworks_load_got): New pattern.
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(call, call_value): Use sparc_emit_call_insn instead of
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emit_call_insn.
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2007-05-09 Bob Wilson <bob.wilson@acm.org>
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* config/xtensa/xtensa.c (xtensa_output_literal): Don't use #if.
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@ -2370,6 +2370,10 @@ sparc-*-sysv4*)
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extra_parts="crtbegin.o crtend.o"
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use_fixproto=yes
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;;
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sparc-wrs-vxworks)
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tm_file="${tm_file} elfos.h svr4.h sparc/sysv4.h vx-common.h vxworks.h sparc/vxworks.h"
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tmake_file="${tmake_file} sparc/t-vxworks"
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;;
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sparc64-*-elf*)
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tm_file="${tm_file} dbxelf.h elfos.h svr4.h sparc/sysv4.h sparc/sp64-elf.h"
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extra_options="${extra_options} sparc/little-endian.opt"
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@ -73,6 +73,7 @@ extern int legitimate_address_p (enum machine_mode, rtx, int);
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extern rtx legitimize_pic_address (rtx, enum machine_mode, rtx);
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extern rtx legitimize_tls_address (rtx);
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extern rtx legitimize_address (rtx, rtx, enum machine_mode);
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extern void sparc_emit_call_insn (rtx, rtx);
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extern void sparc_defer_case_vector (rtx, rtx, int);
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extern bool sparc_expand_move (enum machine_mode, rtx *);
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extern void sparc_emit_set_const32 (rtx, rtx);
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@ -980,17 +980,27 @@ sparc_expand_move (enum machine_mode mode, rtx *operands)
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if (pic_address_needs_scratch (operands[1]))
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operands[1] = legitimize_pic_address (operands[1], mode, 0);
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if (GET_CODE (operands[1]) == LABEL_REF && mode == SImode)
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/* VxWorks does not impose a fixed gap between segments; the run-time
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gap can be different from the object-file gap. We therefore can't
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assume X - _GLOBAL_OFFSET_TABLE_ is a link-time constant unless we
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are absolutely sure that X is in the same segment as the GOT.
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Unfortunately, the flexibility of linker scripts means that we
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can't be sure of that in general, so assume that _G_O_T_-relative
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accesses are never valid on VxWorks. */
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if (GET_CODE (operands[1]) == LABEL_REF && !TARGET_VXWORKS_RTP)
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{
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emit_insn (gen_movsi_pic_label_ref (operands[0], operands[1]));
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return true;
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}
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if (mode == SImode)
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{
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emit_insn (gen_movsi_pic_label_ref (operands[0], operands[1]));
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return true;
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}
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if (GET_CODE (operands[1]) == LABEL_REF && mode == DImode)
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{
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gcc_assert (TARGET_ARCH64);
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emit_insn (gen_movdi_pic_label_ref (operands[0], operands[1]));
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return true;
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if (mode == DImode)
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{
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gcc_assert (TARGET_ARCH64);
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emit_insn (gen_movdi_pic_label_ref (operands[0], operands[1]));
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return true;
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}
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}
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if (symbolic_operand (operands[1], mode))
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@ -3212,7 +3222,9 @@ rtx
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legitimize_pic_address (rtx orig, enum machine_mode mode ATTRIBUTE_UNUSED,
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rtx reg)
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{
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if (GET_CODE (orig) == SYMBOL_REF)
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if (GET_CODE (orig) == SYMBOL_REF
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/* See the comment in sparc_expand_move. */
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|| (TARGET_VXWORKS_RTP && GET_CODE (orig) == LABEL_REF))
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{
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rtx pic_ref, address;
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rtx insn;
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@ -3377,6 +3389,13 @@ load_pic_register (bool delay_pic_helper)
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{
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int orig_flag_pic = flag_pic;
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if (TARGET_VXWORKS_RTP)
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{
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emit_insn (gen_vxworks_load_got ());
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emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
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return;
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}
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/* If we haven't initialized the special PIC symbols, do so now. */
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if (!pic_helper_symbol_name[0])
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{
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@ -3405,6 +3424,29 @@ load_pic_register (bool delay_pic_helper)
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since we may not fall out the bottom. */
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emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
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}
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/* Emit a call instruction with the pattern given by PAT. ADDR is the
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address of the call target. */
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void
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sparc_emit_call_insn (rtx pat, rtx addr)
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{
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rtx insn;
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insn = emit_call_insn (pat);
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/* The PIC register is live on entry to VxWorks PIC PLT entries. */
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if (TARGET_VXWORKS_RTP
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&& flag_pic
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&& GET_CODE (addr) == SYMBOL_REF
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&& (SYMBOL_REF_DECL (addr)
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? !targetm.binds_local_p (SYMBOL_REF_DECL (addr))
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: !SYMBOL_REF_LOCAL_P (addr)))
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{
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use_reg (&CALL_INSN_FUNCTION_USAGE (insn), pic_offset_table_rtx);
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current_function_uses_pic_offset_table = 1;
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}
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}
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/* Return 1 if RTX is a MEM which is known to be aligned to at
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least a DESIRED byte boundary. */
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@ -7771,13 +7813,19 @@ sparc_elf_asm_named_section (const char *name, unsigned int flags,
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the sibling call right? Well, in the C++ case we can end up passing
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the pointer to the struct return area to a constructor (which returns
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void) and then nothing else happens. Such a sibling call would look
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valid without the added check here. */
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valid without the added check here.
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VxWorks PIC PLT entries require the global pointer to be initialized
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on entry. We therefore can't emit sibling calls to them. */
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static bool
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sparc_function_ok_for_sibcall (tree decl, tree exp ATTRIBUTE_UNUSED)
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{
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return (decl
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&& flag_delayed_branch
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&& (TARGET_ARCH64 || ! current_function_returns_struct));
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&& (TARGET_ARCH64 || ! current_function_returns_struct)
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&& !(TARGET_VXWORKS_RTP
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&& flag_pic
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&& !targetm.binds_local_p (decl)));
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}
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/* libfunc renaming. */
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@ -22,6 +22,8 @@ along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "config/vxworks-dummy.h"
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/* Note that some other tm.h files include this one and then override
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whatever definitions are necessary. */
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@ -2409,6 +2411,7 @@ extern int sparc_indent_opcode;
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else if (GET_CODE (index) == REG) \
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fprintf (FILE, "+%s", reg_names[REGNO (index)]); \
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else if (GET_CODE (index) == SYMBOL_REF \
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|| GET_CODE (index) == LABEL_REF \
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|| GET_CODE (index) == CONST) \
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fputc ('+', FILE), output_addr_const (FILE, index); \
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else gcc_unreachable (); \
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@ -1874,6 +1874,22 @@
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"flag_pic"
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"or\t%1, %%lo(%a3-(%a2-.)), %0")
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;; Set up the PIC register for VxWorks.
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(define_expand "vxworks_load_got"
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[(set (match_dup 0)
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(high:SI (match_dup 1)))
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(set (match_dup 0)
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(mem:SI (lo_sum:SI (match_dup 0) (match_dup 1))))
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(set (match_dup 0)
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(mem:SI (lo_sum:SI (match_dup 0) (match_dup 2))))]
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"TARGET_VXWORKS_RTP"
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{
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operands[0] = pic_offset_table_rtx;
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operands[1] = gen_rtx_SYMBOL_REF (SImode, VXWORKS_GOTT_BASE);
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operands[2] = gen_rtx_SYMBOL_REF (SImode, VXWORKS_GOTT_INDEX);
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})
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(define_expand "movdi"
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[(set (match_operand:DI 0 "nonimmediate_operand" "")
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(match_operand:DI 1 "general_operand" ""))]
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@ -6676,7 +6692,7 @@
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{
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rtx fn_rtx;
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gcc_assert (GET_MODE (operands[0]) == FUNCTION_MODE);
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gcc_assert (MEM_P (operands[0]) && GET_MODE (operands[0]) == FUNCTION_MODE);
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gcc_assert (GET_CODE (operands[3]) == CONST_INT);
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@ -6712,18 +6728,20 @@
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/* We accept negative sizes for untyped calls. */
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if (! TARGET_ARCH64 && INTVAL (operands[3]) != 0)
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emit_call_insn
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sparc_emit_call_insn
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(gen_rtx_PARALLEL
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(VOIDmode,
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gen_rtvec (3, gen_rtx_CALL (VOIDmode, fn_rtx, const0_rtx),
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operands[3],
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gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 15)))));
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gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 15)))),
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XEXP (fn_rtx, 0));
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else
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emit_call_insn
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sparc_emit_call_insn
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(gen_rtx_PARALLEL
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(VOIDmode,
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gen_rtvec (2, gen_rtx_CALL (VOIDmode, fn_rtx, const0_rtx),
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gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 15)))));
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gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 15)))),
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XEXP (fn_rtx, 0));
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finish_call:
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@ -6840,7 +6858,7 @@
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rtx fn_rtx;
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rtvec vec;
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gcc_assert (GET_MODE (operands[1]) == FUNCTION_MODE);
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gcc_assert (MEM_P (operands[1]) && GET_MODE (operands[1]) == FUNCTION_MODE);
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fn_rtx = operands[1];
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@ -6849,7 +6867,7 @@
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gen_rtx_CALL (VOIDmode, fn_rtx, const0_rtx)),
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gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (Pmode, 15)));
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emit_call_insn (gen_rtx_PARALLEL (VOIDmode, vec));
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sparc_emit_call_insn (gen_rtx_PARALLEL (VOIDmode, vec), XEXP (fn_rtx, 0));
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DONE;
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})
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@ -0,0 +1,5 @@
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# Multilibs for VxWorks.
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MULTILIB_OPTIONS = mrtp fPIC
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MULTILIB_MATCHES = fPIC=fpic
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MULTILIB_EXCEPTIONS = fPIC
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@ -0,0 +1,64 @@
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/* Definitions of target machine for GNU compiler,
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for SPARC targeting the VxWorks run time environment.
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Copyright (C) 2007 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define ("__sparc"); \
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builtin_define ("CPU=SIMSPARCSOLARIS"); \
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VXWORKS_OS_CPP_BUILTINS (); \
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} \
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while (0)
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#undef OVERRIDE_OPTIONS
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#define OVERRIDE_OPTIONS \
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do \
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{ \
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VXWORKS_OVERRIDE_OPTIONS; \
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sparc_override_options (); \
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} \
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while (0)
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#undef CPP_SUBTARGET_SPEC
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#define CPP_SUBTARGET_SPEC VXWORKS_ADDITIONAL_CPP_SPEC
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#undef LIB_SPEC
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#define LIB_SPEC VXWORKS_LIB_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC VXWORKS_LINK_SPEC
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
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#undef TARGET_VERSION
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#define TARGET_VERSION fputs (" (SPARC/VxWorks)", stderr);
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER VXWORKS_FUNCTION_PROFILER
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/* Use standard numbered ctors/dtors sections. */
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP
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/* We cannot use PC-relative accesses for VxWorks PIC because there is no
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fixed gap between segments. */
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#undef ASM_PREFERRED_EH_DATA_FORMAT
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@ -1,3 +1,7 @@
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2007-05-10 Richard Sandiford <richard@codesourcery.com>
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* config.host (sparc-wrs-vxworks): New target.
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2007-04-14 Kazu Hirata <kazu@codesourcery.com>
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* config.host: Recognize fido.
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@ -594,6 +594,8 @@ sparc-*-sysv4*)
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;;
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sparc64-*-elf*)
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;;
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sparc-wrs-vxworks)
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;;
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sparc64-*-freebsd*|ultrasparc-*-freebsd*)
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;;
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sparc64-*-linux*) # 64-bit SPARC's running GNU/Linux
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